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GeForce GTX 550 Ti vs Radeon HD 6750

Intro

The GeForce GTX 550 Ti has clock speeds of 900 MHz on the GPU, and 1026 MHz on the 1024 MB of GDDR5 RAM. It features 192 SPUs along with 32 Texture Address Units and 24 Rasterization Operator Units.

Compare those specs to the Radeon HD 6750, which makes use of a 40 nm design. AMD has clocked the core speed at 725 MHz. The GDDR5 memory runs at a speed of 1000 MHz on this specific model. It features 720 SPUs along with 36 Texture Address Units and 16 ROPs.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750

86 Watts

GeForce GTX 550 Ti

116 Watts

Difference: 30 Watts (35%)

Memory Bandwidth

The GeForce GTX 550 Ti, in theory, should perform much faster than the Radeon HD 6750 in general. (explain)

GeForce GTX 550 Ti

98496 MB/sec

Radeon HD 6750

64000 MB/sec

Difference: 34496 (54%)

Texel Rate

The GeForce GTX 550 Ti should be a bit (approximately 10%) more effective at anisotropic filtering than the Radeon HD 6750. (explain)

GeForce GTX 550 Ti

28800 Mtexels/sec

Radeon HD 6750

26100 Mtexels/sec

Difference: 2700 (10%)

Pixel Rate

The GeForce GTX 550 Ti is quite a bit (more or less 86%) better at FSAA than the Radeon HD 6750, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 550 Ti

21600 Mpixels/sec

Radeon HD 6750

11600 Mpixels/sec

Difference: 10000 (86%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

GeForce GTX 550 Ti

Amazon.com

Radeon HD 6750

Amazon.com

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

Model

GeForce GTX 550 Ti

Radeon HD 6750

Manufacturer

nVidia

AMD

Year

March 2011

January 2011

Code Name

GF116

Juniper Pro

Fab Process

40 nm

40 nm

Bus

PCIe 2.1 x16

PCIe x16

Memory

1024 MB

512 MB

Core Speed

900 MHz

725 MHz

Shader Speed

1800 MHz

(N/A) MHz

Memory Speed

1026 MHz (4104 MHz effective)

1000 MHz (4000 MHz effective)

Unified Shaders

192

720

Texture Mapping Units

32

36

Render Output Units

24

16

Bus Type

GDDR5

GDDR5

Bus Width

192-bit

128-bit

DirectX Version

DirectX 11

DirectX 11

OpenGL Version

OpenGL 4.1

OpenGL 4.0

Power (Max TDP)

116 watts

86 watts

Shader Model

5.0

5.0

Bandwidth

98496 MB/sec

64000 MB/sec

Texel Rate

28800 Mtexels/sec

26100 Mtexels/sec

Pixel Rate

21600 Mpixels/sec

11600 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in MB per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x.
The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen.
The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.